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Diffstat (limited to 'src/proguard/classfile/visitor/ReferencedClassVisitor.java')
| -rw-r--r-- | src/proguard/classfile/visitor/ReferencedClassVisitor.java | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/proguard/classfile/visitor/ReferencedClassVisitor.java b/src/proguard/classfile/visitor/ReferencedClassVisitor.java new file mode 100644 index 0000000..986c3f9 --- /dev/null +++ b/src/proguard/classfile/visitor/ReferencedClassVisitor.java @@ -0,0 +1,248 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +package proguard.classfile.visitor; + +import proguard.classfile.*; +import proguard.classfile.attribute.*; +import proguard.classfile.attribute.annotation.*; +import proguard.classfile.attribute.annotation.visitor.*; +import proguard.classfile.attribute.visitor.*; +import proguard.classfile.constant.*; +import proguard.classfile.constant.visitor.ConstantVisitor; +import proguard.classfile.util.SimplifiedVisitor; + +/** + * This ClassVisitor, MemberVisitor, ConstantVisitor, AttributeVisitor, etc. + * lets a given ClassVisitor visit all the referenced classes of the elements + * that it visits. Only downstream elements are considered (in order to avoid + * loops and repeated visits). + * + * @author Eric Lafortune + */ +public class ReferencedClassVisitor +extends SimplifiedVisitor +implements ClassVisitor, + MemberVisitor, + ConstantVisitor, + AttributeVisitor, + LocalVariableInfoVisitor, + LocalVariableTypeInfoVisitor, + AnnotationVisitor, + ElementValueVisitor +{ + private final ClassVisitor classVisitor; + + + public ReferencedClassVisitor(ClassVisitor classVisitor) + { + this.classVisitor = classVisitor; + } + + + // Implementations for ClassVisitor. + + public void visitProgramClass(ProgramClass programClass) + { + // Visit the constant pool entries. + programClass.constantPoolEntriesAccept(this); + + // Visit the fields and methods. + programClass.fieldsAccept(this); + programClass.methodsAccept(this); + + // Visit the attributes. + programClass.attributesAccept(this); + } + + + public void visitLibraryClass(LibraryClass libraryClass) + { + // Visit the superclass and interfaces. + libraryClass.superClassAccept(classVisitor); + libraryClass.interfacesAccept(classVisitor); + + // Visit the fields and methods. + libraryClass.fieldsAccept(this); + libraryClass.methodsAccept(this); + } + + + // Implementations for MemberVisitor. + + public void visitProgramMember(ProgramClass programClass, ProgramMember programMember) + { + // Let the visitor visit the classes referenced in the descriptor string. + programMember.referencedClassesAccept(classVisitor); + + // Visit the attributes. + programMember.attributesAccept(programClass, this); + } + + + public void visitLibraryMember(LibraryClass programClass, LibraryMember libraryMember) + { + // Let the visitor visit the classes referenced in the descriptor string. + libraryMember.referencedClassesAccept(classVisitor); + } + + + // Implementations for ConstantVisitor. + + public void visitAnyConstant(Clazz clazz, Constant constant) {} + + + public void visitStringConstant(Clazz clazz, StringConstant stringConstant) + { + // Let the visitor visit the class referenced in the string constant. + stringConstant.referencedClassAccept(classVisitor); + } + + + public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) + { + // Let the visitor visit the class referenced in the reference constant. + refConstant.referencedClassAccept(classVisitor); + } + + + public void visitClassConstant(Clazz clazz, ClassConstant classConstant) + { + // Let the visitor visit the class referenced in the class constant. + classConstant.referencedClassAccept(classVisitor); + } + + + // Implementations for AttributeVisitor. + + public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} + + + public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) + { + // Let the visitor visit the class of the enclosing method. + enclosingMethodAttribute.referencedClassAccept(classVisitor); + } + + + public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) + { + // Visit the attributes of the code attribute. + codeAttribute.attributesAccept(clazz, method, this); + } + + + public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute) + { + // Visit the local variables. + localVariableTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); + } + + + public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute) + { + // Visit the local variable types. + localVariableTypeTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); + } + + + public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute) + { + // Let the visitor visit the classes referenced in the signature string. + signatureAttribute.referencedClassesAccept(classVisitor); + } + + + public void visitAnyAnnotationsAttribute(Clazz clazz, AnnotationsAttribute annotationsAttribute) + { + // Visit the annotations. + annotationsAttribute.annotationsAccept(clazz, this); + } + + + public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute) + { + // Visit the parameter annotations. + parameterAnnotationsAttribute.annotationsAccept(clazz, method, this); + } + + + public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute) + { + // Visit the default element value. + annotationDefaultAttribute.defaultValueAccept(clazz, this); + } + + + // Implementations for LocalVariableInfoVisitor. + + public void visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo) + { + // Let the visitor visit the class referenced in the local variable. + localVariableInfo.referencedClassAccept(classVisitor); + } + + + // Implementations for LocalVariableTypeInfoVisitor. + + public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo) + { + // Let the visitor visit the classes referenced in the local variable type. + localVariableTypeInfo.referencedClassesAccept(classVisitor); + } + + + // Implementations for AnnotationVisitor. + + public void visitAnnotation(Clazz clazz, Annotation annotation) + { + // Let the visitor visit the classes referenced in the annotation. + annotation.referencedClassesAccept(classVisitor); + + // Visit the element values. + annotation.elementValuesAccept(clazz, this); + } + + + // Implementations for ElementValueVisitor. + + public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue) {} + + + public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation, EnumConstantElementValue enumConstantElementValue) + { + // Let the visitor visit the classes referenced in the constant element value. + enumConstantElementValue.referencedClassesAccept(classVisitor); + } + + + public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue) + { + // Let the visitor visit the classes referenced in the class element value. + classElementValue.referencedClassesAccept(classVisitor); + } + + + public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue) + { + // Visit the element values. + arrayElementValue.elementValuesAccept(clazz, annotation, this); + } +} |